Analyses of pseudo-nondiffracting beams at oblique incidence

Jyh Rou Sze, An Chi Wei, Fong Zhi Chen

研究成果: 雜誌貢獻期刊論文同行評審


We design three types of diffractive optical elements (DOEs) which generate pseudo-nondiffracting beams (PNDBs) in different regions by using the conjugate gradient method. In order to analyze the influence of the tilt angles of the DOEs, the coordinate-transformation method is used to simplify the calculation. The uniformity of the out-coupling illuminance along the optical axis is calculated. The analyzed results show that when the tilt angle increases, the uniformity in the region [140 mm, 200 mm] has more violent fluctuations than those in the regions [280 mm, 340 mm] and [380 mm, 520 mm]. The analyses also reveal that the uniformity of DOEs with a longer focal length is less sensitive to the tilt angle, and some points within the PNDB region have small variations of axial illuminance while the tilt angle increases.

頁(從 - 到)173-178
期刊Applied Physics A: Materials Science and Processing
出版狀態已出版 - 10月 2010


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